Electronics Forum | Tue Jan 31 12:53:50 EST 2006 | Chunks
We just did this and are awaiting the results. Solder balling and a burnt looking flux where visual indicators that we noticed running regular paste at no-lead temps.
Electronics Forum | Tue Oct 18 10:36:46 EDT 2022 | winston_one
Dear proffessionals! Question is about this alloys - Sn99Cu07 and Sn100 (Sn100C,Sn100Ni+ etc.). Is it O'k to mix them? In my case to use Sn99Cu07 as addition to selective soldering machine bath with Sn100C? Main components are the same, but minor add
Electronics Forum | Thu Sep 11 16:50:18 EDT 2003 | davef
Sure it's conceivable that thin HASL can cause tombstoning. Harkening back to the ample discussion in the fine SMTnet Archives, tombstoning is caused by an imbalance in solder surface tension between the two pads of SMT component. The source of thi
Electronics Forum | Wed May 07 15:36:04 EDT 2008 | llaerum
The 483 is what we use on all boards except on one where the 353 improved wetting on resistor packs. It worked much better since the parts are LF and this is the same flux AIM uses in their LF solder. Yes, it was recommended by AIM when we discussed
Electronics Forum | Thu Mar 10 10:06:08 EST 2005 | steve
OK all you Gurus here's one for ya. Customer is tinning wires with standard eutectic solder in a solder pot. There is a blue tint to the solder in the pot. After tinning with OA flux, which I will change to NC shortly, he has clear teflon insulation
Electronics Forum | Thu Mar 10 15:43:06 EST 2005 | steve
Thank you both for your assistance. I knew that I could count on you folks. The customer has purchased No-Clean flux and is using it as we speak. Hows that for customer service.... All in a days work... Thanks again You make me look good!!! Steve
Electronics Forum | Fri Mar 27 12:46:23 EDT 2020 | unisoft
Unisoft has been import gerber only for years to setup assembly, aoi machines, etc. *** Help for Importing GERBER only files for used in programming Assembly, AOI, Test, Selective Soldering machines (X/Y Center, Rot, Part#). Also allows you to cre
Electronics Forum | Mon Sep 17 16:03:13 EDT 2001 | jschake
The results from an experiment comparing 27 different combinations of pad dimensions concluded that the pad design with 15 mil pad length, 12 mil pad width, and 9 mil pad separation produced the best assembly yields. A 5 mil thick laser cut stencil
Electronics Forum | Wed Apr 11 22:05:58 EDT 2001 | davef
OA pastes are more hydroscopic than NC pastes. Hydroscopic. The capacity of a material to absorb and retain moisture from the ambient air. Sometimes this is compounded if you remove paste from the frig and let it warm to room temperature, because
Electronics Forum | Tue Nov 11 17:35:08 EST 2008 | davef
SM-840, is a material qualification document only, with all the test requirements applicable only to a defined test coupon, not to production boards. So, it's useless for what you're trying to accomplish. As assemblers use A-610 - Acceptability Of E
